Abstract: A refrigerator having an inner case with increased strength and a method of manufacturing the same. The refrigerator includes a cooling system, a body coupled to the cooling system, a door coupled to the body, and a plurality of reinforcing protrusions. The body includes an outer case encasing an inner body case having a storage compartment defined therein. The door includes an outer door case encasing an inner door case. The door is coupled to the body to provide access to the storage compartment which is cooled by the cooling system. The plurality of reinforcing protrusions is disposed on at least one inner surface of either the inner body case or the inner door case. The plurality of reinforcing protrusions allows for manufacturing thinner inner cases for refrigerators that cannot be easily deformed and have a low product defect rate.